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Fluid inclusions containing mica and quartz, in aquamarine from Pakistan
Inclusions of hematite in aquamarine, Tanzania
Two-phase inclusions in sapphire, Sri Lanka
Inclusions of fossil plant debris in opal from Wollo, Ethiopia
Twin-crystal of chrysoberyl
Colour zoning in ruby from Mong-Shu, Burma
Fire opal, Mexico
Bubbles and swirls in moldavite (natural glass)

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© SGG/SSG 2020

 

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